CN205958509U - Electrochemistry alcohol concentration tester - Google Patents
Electrochemistry alcohol concentration tester Download PDFInfo
- Publication number
- CN205958509U CN205958509U CN201620945391.9U CN201620945391U CN205958509U CN 205958509 U CN205958509 U CN 205958509U CN 201620945391 U CN201620945391 U CN 201620945391U CN 205958509 U CN205958509 U CN 205958509U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- chip
- circuit
- feet
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses an electrochemistry alcohol concentration tester, include: alcohol sensor circuit, AD converting circuit, single -chip control circuit, display circuit and keying circuit, alcohol sensor circuit contain sensor chip, sensor chip's 1 foot connects the 2.2V power, and 3 feet connect simulation ground, and 2 feet are connected to 3.3V power, 2 foot output detection signal AINN2 through resistance MQR1, resistance MQR2 and MQR3 series connection are at the 3.3V power and simulate between the ground series connection point output voltage AINP2, signal AINN2 and signal AINP2 constitute a set of differential signal, through the wave filter post -filter, give AD converter circuit, the utility model discloses an electrochemistry alcohol concentration tester has low -power consumption, high accuracy, high sensitivity, linear range is wide, the interference killing feature is strong characteristics.
Description
Technical field
This utility model is related to alcohol tester field, more particularly to a kind of portable electrochemical alcohol concentration test
Instrument.
Background technology
With the high speed development of China's economic, the rapid raising of living standards of the people, China gradually steps into " automotive society ",
Accident caused by drinking drive behavior gets more and more, and also increasing to social impact, ethanol is becoming more and more fierce and more cruel
" road killer ".
The economic loss being caused by vehicle accident is also quite surprising.According to accident investigation statistics, about 50% 60% traffic accident
Relevant with drinking.The Chinese Ministry of Public Security, in August, 2009, strengthens investigating and prosecuting the dynamics driven when intoxicated, to reduce by wine throughout the country
Drive the pernicious vehicle accident causing afterwards.Investigate and prosecute the alcohol content relating in detection human body and examined using equipment
The problem surveyed.
However, existing alcohol tester adopts semiconductor transducer, accordingly slowly, linearly poor, error is big, poor repeatability, work(
Consumption height is it has not been convenient to carry.
Content of the invention
For the shortcoming of above conventional semiconductors sensor, the technical problem that this utility model solves is using electrochemistry wine
Smart sensor；Main feature is as follows：Low-power consumption, in high precision, high sensitivity, range of linearity width, strong antijamming capability, excellent weight
Renaturation and stability.
The technical solution of the utility model is：
A kind of electrochemistry tester for alcohol concentration is provided, including：Alcohol sensor circuit, A/D change-over circuit, single-chip microcomputer control
Circuit processed, display circuit and key circuit it is characterised in that
Alcohol sensor circuit comprises sensor chip, and 1 foot of described sensor chip connects 2.2V power supply, and 3 feet connect simulation
Ground, 2 feet are connected to 3.3V power supply, 2 foot output detection signal AINN2 by resistance MQR1；Resistance MQR2 and MQR3 is connected in series
Between 3.3V power supply and simulation ground, it is connected in series an output voltage signal AINP2；Signal AINN2 and signal AINP2 constitutes one
Group differential signal, after filtering after device filtering, gives A/D converter circuit；
Described wave filter comprises electric capacity AD2_C5, electric capacity AD2_C6, electric capacity AD2_C7, resistance AD2_R3, resistance AD2_R4；
Electric capacity AD2_C5, electric capacity AD2_C6, electric capacity AD2_C7 are sequentially connected in series, the series arm two ends of composition, all connect simulation ground, electric capacity
The junction point of AD2_C5 and electric capacity AD2_C6 exports as a road, connects 13 feet of A/D chip in A/D change-over circuit, meanwhile, electricity
The junction point holding AD2_C5 and electric capacity AD2_C6 is also connected with one end of resistance AD2_R3, and the other end of resistance AD2_R3 connects
AINN2 signal；The junction point of electric capacity AD2_C6 and electric capacity AD2_C7 exports as a road, connects A/D chip in A/D change-over circuit
14 feet, meanwhile, the junction point of electric capacity AD2_C6 and electric capacity AD2_C7 is also connected with one end of resistance AD2_R4, resistance AD2_R4's
The other end connects AINP2 signal；
In described A/D change-over circuit, comprise A/D chip, 13 feet of described A/D chip and 14 feet receive device filter after filtering
Two paths of differential signals after ripple；24 feet of A/D chip export the digital signal DOUT after A/D conversion to single chip machine controlling circuit；
19 feet of A/D chip and 20 feet, receive signal GAIN0 and GAIN1 from single chip machine controlling circuit, respectively for controlling conversion
Gain；21 feet of A/D chip, receive the signal SPEED from single chip machine controlling circuit, for controlling conversion speed；A/D chip
22 feet, receive from single chip machine controlling circuit signal PDWN, be used for carrying out chip reset；23 feet of A/D chip, receive
Clock signal SCLK from single chip machine controlling circuit；
Described single chip machine controlling circuit receives the digital signal DOUT from A/D change-over circuit, and by this digital signal institute
The alcohol concentration representing, is shown by display circuit；
Described key circuit exports 3 road button control signals to single chip machine controlling circuit, described single chip machine controlling circuit root
According to described 3 road button control signals, tester is realized with different parameter regulations.
11 feet of described A/D chip and 12 feet also by another wave filter receive another to differential signal AINP1 and
AINN1；Described another wave filter comprises electric capacity AD1_C5, electric capacity AD1_C6, electric capacity AD1_C7, resistance AD1_R3, resistance AD1_
R4；Electric capacity AD1_C5, electric capacity AD1_C6, electric capacity AD1_C7 are sequentially connected in series, the series arm two ends of composition, all connect simulation ground, electricity
The junction point holding AD1_C5 and electric capacity AD1_C6 exports as a road, connects 11 feet of A/D chip in A/D change-over circuit, meanwhile,
The junction point of electric capacity AD1_C5 and electric capacity AD1_C6 is also connected with one end of resistance AD1_R3, and the other end of resistance AD1_R3 connects
AINP1 signal；The junction point of electric capacity AD1_C6 and electric capacity AD1_C7 exports as a road, connects A/D chip in A/D change-over circuit
12 feet, meanwhile, the junction point of electric capacity AD1_C6 and electric capacity AD1_C7 is also connected with one end of resistance AD1_R4, resistance AD1_R4's
The other end connects AINN1 signal.
8 feet of A/D chip, receive the selection signal from single chip machine controlling circuit, for controlling A/D chip to be to difference
Signal AINN2 and AINP2 carries out A/D conversion, or carries out A/D conversion to differential signal AINP1 and AINN1.
Differential signal AINP1 and AINN1 comes from another sensor, the parameter needing for measurement.
Another sensor described, for measuring sound.
The beneficial effects of the utility model are：This utility model adopts electrochemistry alcohol sensor low phase than traditional ethanol
Tester, have low-power consumption, in high precision, high sensitivity, range of linearity width, strong antijamming capability, excellent repeatability and stable
Property.
Brief description
Fig. 1 alcohol sensor circuit；
Fig. 2 A/D change-over circuit.
Specific embodiment
Electrochemistry tester for alcohol concentration, including：Alcohol sensor circuit, A/D change-over circuit, single chip machine controlling circuit,
Display circuit and key circuit.
Accompanying drawing 1 is alcohol sensor circuit, and accompanying drawing 2 is A/D change-over circuit, and single-chip microcomputer can adopt STC15W4K60S4 type
Single-chip microcomputer, its physical circuit is exactly singlechip minimum system circuit, is well known to those skilled in the art, therefore not new in this practicality
Type is open.
Alcohol sensor circuit comprises sensor chip, and this chip adopts MQ303A type sensor, described sensor chip
1 foot connect 2.2V power supply, 3 feet connect simulation ground, and 2 feet pass through resistance MQR1 and connect to 3.3V power supply, and 2 feet export detection signals
AINN2；Resistance MQR2 and MQR3 is connected in series between 3.3V power supply and simulation ground, is connected in series an output voltage signal
AINP2；Signal AINN2 and signal AINP2 constitutes one group of differential signal, after filtering after device filtering, gives A/D converter electricity
Road；
Described wave filter comprises electric capacity AD2_C5, electric capacity AD2_C6, electric capacity AD2_C7, resistance AD2_R3, resistance AD2_R4；
Electric capacity AD2_C5, electric capacity AD2_C6, electric capacity AD2_C7 are sequentially connected in series, the series arm two ends of composition, all connect simulation ground, electric capacity
The junction point of AD2_C5 and electric capacity AD2_C6 exports as a road, connects 13 feet of A/D chip in A/D change-over circuit, meanwhile, electricity
The junction point holding AD2_C5 and electric capacity AD2_C6 is also connected with one end of resistance AD2_R3, and the other end of resistance AD2_R3 connects
AINN2 signal；The junction point of electric capacity AD2_C6 and electric capacity AD2_C7 exports as a road, connects A/D chip in A/D change-over circuit
14 feet, meanwhile, the junction point of electric capacity AD2_C6 and electric capacity AD2_C7 is also connected with one end of resistance AD2_R4, resistance AD2_R4's
The other end connects AINP2 signal；
In described A/D change-over circuit, comprise A/D chip, this chip adopts ADS1232,13 feet and 14 of described A/D chip
Foot receives the filtered two paths of differential signals of device after filtering；24 feet of A/D chip export the digital signal DOUT after A/D conversion
To single chip machine controlling circuit；19 feet of A/D chip and 20 feet, respectively receive from single chip machine controlling circuit signal GAIN0 and
GAIN1, for controlling conversion gain；21 feet of A/D chip, receive the signal SPEED from single chip machine controlling circuit, for controlling
Conversion speed processed；22 feet of A/D chip, receive the signal PDWN from single chip machine controlling circuit, are used for carrying out chip reset；A/
23 feet of D chip, receive clock signal SCLK from single chip machine controlling circuit；
Described single chip machine controlling circuit receives the digital signal DOUT from A/D change-over circuit, and by this digital signal institute
The alcohol concentration representing, is shown by display circuit；
Described key circuit exports 3 road button control signals to single chip machine controlling circuit, described single chip machine controlling circuit root
According to described 3 road button control signals, tester is realized with different parameter regulations.
11 feet of A/D chip and 12 feet also by another wave filter receive another to differential signal AINP1 and AINN1；Institute
State another wave filter and comprise electric capacity AD1_C5, electric capacity AD1_C6, electric capacity AD1_C7, resistance AD1_R3, resistance AD1_R4；Electric capacity
AD1_C5, electric capacity AD1_C6, electric capacity AD1_C7 are sequentially connected in series, the series arm two ends of composition, all meet simulation ground, electric capacity AD1_C5
Export as a road with the junction point of electric capacity AD1_C6, connect 11 feet of A/D chip in A/D change-over circuit, meanwhile, electric capacity AD1_
The junction point of C5 and electric capacity AD1_C6 is also connected with one end of resistance AD1_R3, and the other end of resistance AD1_R3 connects AINP1 signal；
The junction point of electric capacity AD1_C6 and electric capacity AD1_C7 exports as a road, connects 12 feet of A/D chip in A/D change-over circuit, with
When, the junction point of electric capacity AD1_C6 and electric capacity AD1_C7 is also connected with one end of resistance AD1_R4, and the other end of resistance AD1_R4 is even
Connect AINN1 signal.
8 feet of A/D chip, receive the selection signal from single chip machine controlling circuit, for controlling A/D chip to be to difference
Signal AINN2 and AINP2 carries out A/D conversion, or carries out A/D conversion to differential signal AINP1 and AINN1.
Differential signal AINP1 and AINN1 comes from another sensor, the parameter needing for measurement, such as sound, pressure
The signals such as power.
Above-mentioned specific embodiment, simply to illustrate that technology design of the present utility model and application characteristic, its object is to allow
The project planner being familiar with this field will appreciate that Essence of the present utility model and is applied, but can not therefore and
Limit protection domain of the present utility model.Therefore practical application when any physical location all this patent protection domain it
Interior.No matter hereinbefore arise how detailed description it is also possible to implement this utility model with many modes.Above-mentioned controlling party
The details of formula executes in details and can carry out considerable change at it, but it is still contained in disclosed herein practicality
In new.All equivalent transformations being done according to this utility model spirit or modification, all should cover in guarantor of the present utility model
Within the scope of shield.
Claims (5)
1. a kind of electrochemistry tester for alcohol concentration, including：Alcohol sensor circuit, A/D change-over circuit, Single-chip Controlling electricity
Road, display circuit and key circuit it is characterised in that
Described alcohol sensor circuit comprises sensor chip, and 1 foot of described sensor chip connects 2.2V power supply, and 3 feet connect simulation
Ground, 2 feet are connected to 3.3V power supply, 2 foot output detection signal AINN2 by resistance MQR1；Resistance MQR2 and MQR3 is connected in series
Between described 3.3V power supply and simulation ground, it is connected in series an output voltage signal AINP2；Described signal AINN2 and signal
AINP2 constitutes one group of differential signal, after filtering after device filtering, gives described A/D converter circuit；
Described wave filter comprises electric capacity AD2_C5, electric capacity AD2_C6, electric capacity AD2_C7, resistance AD2_R3, resistance AD2_R4；Described
Electric capacity AD2_C5, electric capacity AD2_C6, electric capacity AD2_C7 are sequentially connected in series, the series arm two ends of composition, all connect simulation ground, described electricity
The junction point holding AD2_C5 and electric capacity AD2_C6 exports as a road, connects 13 feet of A/D chip in described A/D change-over circuit,
Meanwhile, the junction point of described electric capacity AD2_C5 and electric capacity AD2_C6 is also connected with one end of resistance AD2_R3, and resistance AD2_R3's is another
One end connects AINN2 signal；The junction point of described electric capacity AD2_C6 and electric capacity AD2_C7 exports as a road, connects A/D conversion
14 feet of A/D chip in circuit, meanwhile, the junction point of described electric capacity AD2_C6 and electric capacity AD2_C7 is also connected with resistance AD2_R4's
One end, the other end of resistance AD2_R4 connects AINP2 signal；
In described A/D change-over circuit, comprise A/D chip, after 13 feet of described A/D chip and 14 feet receive device filtering after filtering
Two paths of differential signals；24 feet of described A/D chip export the digital signal DOUT after A/D conversion to single chip machine controlling circuit；
19 feet of described A/D chip and 20 feet, receive signal GAIN0 and GAIN1 from single chip machine controlling circuit, respectively for controlling
Conversion gain；21 feet of described A/D chip, receive the signal SPEED from single chip machine controlling circuit, for controlling conversion speed
Degree；22 feet of described A/D chip, receive the signal PDWN from single chip machine controlling circuit, are used for carrying out chip reset；Described A/
23 feet of D chip, receive clock signal SCLK from single chip machine controlling circuit；
Described single chip machine controlling circuit receives the digital signal DOUT from described A/D change-over circuit, and by this digital signal institute
The alcohol concentration representing, is shown by display circuit；
Described key circuit exports 3 road button control signals to single chip machine controlling circuit, and described single chip machine controlling circuit is according to institute
State 3 road button control signals, tester is realized with different parameter regulations.
2. electrochemistry tester for alcohol concentration according to claim 1 it is characterised in that 11 feet of described A/D chip and
12 feet also by another wave filter receive another to differential signal AINP1 and AINN1；Described another wave filter comprises electric capacity AD1_
C5, electric capacity AD1_C6, electric capacity AD1_C7, resistance AD1_R3, resistance AD1_R4；Described electric capacity AD1_C5, electric capacity AD1_C6, electric capacity
AD1_C7 is sequentially connected in series, the series arm two ends of composition, all connects simulation ground, the connection of described electric capacity AD1_C5 and electric capacity AD1_C6
O'clock as one tunnel export, connect A/D change-over circuit in A/D chip 11 feet, meanwhile, described electric capacity AD1_C5 and electric capacity AD1_C6
Junction point be also connected with one end of resistance AD1_R3, the other end of resistance AD1_R3 connects AINP1 signal；Described electric capacity AD1_C6
Export as a road with the junction point of electric capacity AD1_C7, connect 12 feet of A/D chip in described A/D change-over circuit, meanwhile, described
The junction point of electric capacity AD1_C6 and electric capacity AD1_C7 is also connected with one end of resistance AD1_R4, and the other end of resistance AD1_R4 connects
AINN1 signal.
3. electrochemistry tester for alcohol concentration according to claim 2, it is characterised in that 8 feet of described A/D chip, connects
Receive the selection signal from single chip machine controlling circuit, for controlling A/D chip to be to carry out A/D to differential signal AINN2 and AINP2
Conversion, or A/D conversion is carried out to differential signal AINP1 and AINN1.
4. electrochemistry tester for alcohol concentration according to claim 3 it is characterised in that described differential signal AINP1 and
AINN1 comes from another sensor, the parameter needing for measurement.
5. electrochemistry tester for alcohol concentration according to claim 4, it is characterised in that another sensor described, is used
In measurement sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945391.9U CN205958509U (en) | 2016-08-26 | 2016-08-26 | Electrochemistry alcohol concentration tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620945391.9U CN205958509U (en) | 2016-08-26 | 2016-08-26 | Electrochemistry alcohol concentration tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205958509U true CN205958509U (en) | 2017-02-15 |
Family
ID=57979935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620945391.9U Expired - Fee Related CN205958509U (en) | 2016-08-26 | 2016-08-26 | Electrochemistry alcohol concentration tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205958509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782775A (en) * | 2016-08-26 | 2018-03-09 | 南阳盛世光明软件有限公司 | A kind of electrochemistry tester for alcohol concentration |
-
2016
- 2016-08-26 CN CN201620945391.9U patent/CN205958509U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782775A (en) * | 2016-08-26 | 2018-03-09 | 南阳盛世光明软件有限公司 | A kind of electrochemistry tester for alcohol concentration |
| CN107782775B (en) * | 2016-08-26 | 2024-02-13 | 河南盛世鑫诚集团有限公司 | Electrochemical alcohol concentration tester |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975893B (en) | Differential capacitance detection circuit based on instrument amplifier and detection method thereof | |
| CN104297324B (en) | A kind of Portable heavy metal ion detection instrument instrument and method based on Android | |
| CN203364966U (en) | High-precision and high-sensitivity optical power meter with large dynamic range | |
| CN108181351A (en) | Portable water quality monitoring parameter voltage/current signal processing circuit | |
| CN205510002U (en) | Amplification and filtering circuit of special signal of telecommunication | |
| CN205958509U (en) | Electrochemistry alcohol concentration tester | |
| CN107422017B (en) | A kind of chemically modified electrode and preparation method thereof of highly sensitive detection probenazole | |
| CN106323412A (en) | High frequency interference-elimination type water level pre-warning system based on internet of things technology | |
| CN106154053A (en) | A kind of detection chip of the weak capacitive realized based on carrier modulation and phase demodulation | |
| CN103760217B (en) | A kind of based on three electrode high-precision blood wine concentration determination circuit | |
| CN201974399U (en) | Matrix humidity and conductivity in-situ detector | |
| CN106645972A (en) | Platform used for detecting resistance value of small resistor | |
| CN205921579U (en) | Metering device who keeps apart sampling circuit and make with this circuit | |
| CN200986551Y (en) | Exhaled air alcohol detector signal processing circuit | |
| CN2694289Y (en) | High tension battery alternating current internal resistance tester | |
| CN103759807B (en) | A kind of airport noise monitoring device based on Internet of Things framework | |
| CN103076480B (en) | Tiny signal collecting card | |
| CN209280821U (en) | A kind of outer electric energy quality monitoring, recording instrument of household portable | |
| CN204789329U (en) | Infrared turbidity detection device | |
| CN201607408U (en) | ATP fluorescence detection device | |
| CN2859554Y (en) | DC ground connection fault indicator | |
| CN103267792B (en) | Intelligent chemical analysis system for distinguishing detection of weak electrolyte sample and method therefor | |
| CN107782775A (en) | A kind of electrochemistry tester for alcohol concentration | |
| CN212749060U (en) | Device for monitoring lightning electric field signal | |
| CN204154375U (en) | Based on the electronic scale of electromagnetic induction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20190826 |